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Semimetallic TiO2 Nanotubes

Authors

  • Robert Hahn Dipl.-Ing.,

    1. University of Erlangen-Nuremberg, Department of Materials Science and Engineering, Martenstrasse 7, 91058 Erlangen (Germany), Fax: (+49) 9131-852-7582
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  • Felix Schmidt-Stein Dipl.-Ing.,

    1. University of Erlangen-Nuremberg, Department of Materials Science and Engineering, Martenstrasse 7, 91058 Erlangen (Germany), Fax: (+49) 9131-852-7582
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  • Jarno Salonen Dr.,

    1. Laboratory of Industrial Physics, Department of Physics, University of Turku, 20014 Turku (Finland)
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  • Stefan Thiemann,

    1. University of Erlangen-Nuremberg, Department of Materials Science and Engineering, Martenstrasse 7, 91058 Erlangen (Germany), Fax: (+49) 9131-852-7582
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  • YanYan Song Dr.,

    1. University of Erlangen-Nuremberg, Department of Materials Science and Engineering, Martenstrasse 7, 91058 Erlangen (Germany), Fax: (+49) 9131-852-7582
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  • Julia Kunze Dr.,

    1. University of Erlangen-Nuremberg, Department of Materials Science and Engineering, Martenstrasse 7, 91058 Erlangen (Germany), Fax: (+49) 9131-852-7582
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  • Vesa-Pekka Lehto Dr.,

    1. Laboratory of Industrial Physics, Department of Physics, University of Turku, 20014 Turku (Finland)
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  • Patrik Schmuki Prof. Dr.

    1. University of Erlangen-Nuremberg, Department of Materials Science and Engineering, Martenstrasse 7, 91058 Erlangen (Germany), Fax: (+49) 9131-852-7582
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  • We thank Prof. Allan Bard for drawing our attention to Magnéli phases. Furthermore the authors would like to acknowledge R. Kosmala for TEM, R. Lynch for SEM, U. Marten-Jahns for assistance in XRD and the Engineering of Advanced Materials (EAM) (catalysis section) Cluster of Excellence in Erlangen for financial support.

Abstract

original image

Orchestrating conductors: A carbo-thermal reduction treatment of a TiO2 nanotube layer in acetylene converts the tube walls into highly conductive and stable oxy carbide compounds. The resulting semimetallic TiO2 nanotube layers (TiOxCy) are electrode materials with properties that differ from other TiO2 nanotubes (see picture). They have a high oxygen overpotential and can be used as a catalyst support, for example, for methanol oxidation.

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